公开(公告)号：US09612451B2

公开(公告)日：2017-04-04

申请号：US14818818

申请日：2015-08-05

Applicant: FUJIFILM Corporation

Inventor： Daiki Kawamura

IPC: G02B27/64 ,  G02B15/173

CPC classification number: G02B27/646 ,  G02B15/173

Abstract: A zoom lens consists of four or five lens groups, consisting of, in order from the object side, a positive first group a negative second group, one or two middle groups including a positive mp group, and a positive rearmost group at the most image-side position of the entire system. Zooming is effected by changing all distances between the adjacent groups. The rearmost group consists of, in order from the object side, a positive front group, a negative middle group, and a positive rear group. Air spaces between the front and middle groups, and between the middle and rear groups are constant during zooming and focusing. The front group includes two positive lenses and one negative lens. Image stabilization is effected by shifting the middle group perpendicularly to the optical axis. The rear group includes one positive lens and two negative lenses. The zoom lens satisfies a given condition expression.

公开(公告)号：US09568716B2

公开(公告)日：2017-02-14

申请号：US14645435

申请日：2015-03-12

Applicant: FUJIFILM Corporation

Inventor： Daiki Kawamura

IPC: G02B9/60 ,  G02B15/163 ,  G02B15/173 ,  G02B15/16 ,  G02B27/64

CPC classification number: G02B15/163 ,  G02B15/16 ,  G02B15/173 ,  G02B27/646

Abstract: A zoom lens consists of a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having negative refractive power, and a fifth lens group having positive refractive power in this order from an object side. Distances between the lens groups change during magnification change, and the first lens group is positioned closer to the object side in a telephoto end state than its position in a wide angle end state. Further, the first lens group consists of three lenses of an 11th lens having negative refractive power, a 12th lens having positive refractive power and a 13th lens having positive refractive power in this order from the object side. Further, the following conditional expressions are satisfied: 1.75

Abstract translation: 变焦透镜由具有正屈光力的第一透镜组，具有负屈光力的第二透镜组，具有正折光力的第三透镜组，具有负折光力的第四透镜组和具有正折光力的第五透镜组组成 从物体的这个顺序。 透镜组之间的距离在放大变化期间变化，并且在远摄端状态下，第一透镜组位于比广角端状态的位置更靠近物体侧。 此外，第一透镜组由具有负折光力的第十一透镜的三个透镜，具有正屈光力的第十二透镜和从物体侧起依次具有正折射光焦度的第十三透镜组成。 此外，满足以下条件表达式：1.75

公开(公告)号：US09013806B2

公开(公告)日：2015-04-21

申请号：US14317850

申请日：2014-06-27

Applicant: FUJIFILM Corporation

Inventor： Daiki Kawamura

IPC: G02B13/00

CPC classification number: G02B13/002 ,  G02B13/0015 ,  G02B13/0045

Abstract: An imaging-lens substantially consists of a first-lens-group, a stop and a second-lens-group in this order from object-side. The first-lens-group substantially consists of three or less lenses including a negative-lens arranged closest to object-side and a positive-lens arranged on image-side of the negative-lens. The first-lens-group includes a negative-lens having a meniscus-shape with its convex-surface facing object-side and a positive-lens cemented on the negative-lens in this order from object-side. The second-lens-group substantially consists of five or less lenses including a cemented-lens of two lenses of a positive-lens and a negative-lens and a single-lens having positive-refractive-power, and which is arranged on image-side of the cemented-lens. Conditional-formulas about a refractive-index and an Abbe-number of the negative-lens arranged closest to the object-side in the first-lens-group for d-line, Abbe-numbers of the positive-lens and the negative-lens constituting the cemented-lens in the second-lens-group for d-line, and a refractive-index of the single-lens constituting the second-lens-group for d-line are satisfied.

Abstract translation: 成像透镜基本上由物体侧依次包括第一透镜组，光阑和第二透镜组。 第一透镜组基本上由三个或更少的透镜组成，包括最靠近物体侧设置的负透镜和布置在负透镜的像侧上的正透镜。 第一透镜组包括具有面向物体侧的凸面的弯月形状的正透镜和从物体侧依次从负透镜胶合的正透镜。 第二透镜组基本上由五个或更少的透镜组成，包括正透镜和负透镜的两个透镜的胶合透镜和具有正折光力的单透镜， 胶合透镜的一侧。 关于d线的第一透镜组中最靠近物体侧的折射率的折射率和阿贝数的条件式，正透镜和负透镜的阿贝数 在d线的第二透镜组中构成胶合透镜，并且满足构成d线的第二透镜组的单透镜的折射率。

公开(公告)号：US09007697B2

公开(公告)日：2015-04-14

申请号：US14100036

申请日：2013-12-09

Applicant: FUJIFILM Corporation

Inventor： Daiki Kawamura

IPC: G02B15/177 ,  G02B15/14 ,  G02B15/16 ,  G02B13/00

CPC classification number: G02B15/177 ,  G02B13/009 ,  G02B15/14 ,  G02B15/16

Abstract: A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. The first lens group includes a first lens having a negative refractive power and a second lens, which is plastic, having a positive refractive power. The zoom lens satisfies the following conditional formulae, when Nd1n is the refractive index of the first lens with respect to the d line, Nd1p and νd1p are the refractive index and the Abbe's number of the second lens with respect to the d line, respectively, d2 is the spatial distance between the first lens and the second lens along an optical axis, and fw is the focal length of the entire system at the wide angle end: 1.48

Abstract translation: 变焦透镜包括：具有负屈光力的第一透镜组; 以及具有正屈光力的第二透镜组，从物体侧依次设置。 第一透镜组包括具有负屈光力的第一透镜和具有正折光力的塑料的第二透镜。 当Nd1n是第一透镜相对于d线的折射率时，变焦透镜满足以下条件式，Nd1p和＆ngr; d1p是第二透镜相对于d线的折射率和阿贝数， d2分别为沿着光轴的第一透镜与第二透镜之间的空间距离，fw为广角端整个系统的焦距：1.48